tomorrow night at 8:00, the upper deck of the bay bridge will shut down and caltrans is circulating, not one, but two flyers. i've been speaking with these guys here, and they tell me that they've been at bart station for nearly two weeks, letting people know about alternate routes and that bart will run 24 hours a day this holiday weekend and something everyone might know by now, but they don't. caltrans has signs up at the entrances to the bay bridge which will be closed until tuesday morning so that realignment work can be done on the new eastern span. 370,000 commuters drive it daily which is roughly the same as bart. instead of closing at midnight, bart will run 24/7. one commuter told us she didn't hear much about it. >> a little bit late, i would think. >> i don't think it was a big promotion on that piece. >> when did you find out? yesterday? >> but the times we've run overnight before and the numbers are relatively small.